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Nataliya [291]
3 years ago
15

My friend didn’t do this and he got another question ASAP

Mathematics
1 answer:
AysviL [449]3 years ago
4 0

Answer: B.) I and II

Step-by-step explanation: remember doing this in like- middle school so you're welcome! it should be the right answer(:

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I NEED HELP ON QUESTION B AND C ASAP.
ipn [44]

Answer:

  • See below

Step-by-step explanation:

<h3>Part B</h3>

Assumed the dimensions of the top and bottom parts are identical.

Since the cylindrical part has total height of 1.8 cm and the hemisphere volume is transferred to bottom part and the cone part is still full, the value of h is the difference of the total height of cylinder and full part of the top section of cylinder:

  • h = 1.8 cm - 0.3 cm = 1.5 cm
<h3>Part C</h3>

Find the volume of sand in the bottom part. It consists of a hemisphere and a cylinder of 1.5 cm height.

  • V(cylinder) = πr²h = 3.14*(2.6/2)²*1.5 ≈ 7.96 cm³
  • V(hemisphere) = 2/3πr³ = 2/3*3.14*(2.6/2)³ ≈ 4.6 cm³

<u>Total sand in the bottom part:</u>

  • 7.96 + 4.6 = 12.56 cm³

<u>Time taken:</u>

  • 12.56 / 0.05 = 251.2 seconds = 4 min 11.2 seconds
8 0
3 years ago
Solve the given equation by completing the square.
Dmitriy789 [7]

Answer:

a = -4, b = 3 and c = 6 (OR)

a = -4, b = -3 and c = 6

Step-by-step explanation:

x^{2} +8x = 38

Add 16 to both sides.

x^{2} +8x+16 = 38 + 16

(x+4)^{2} =54

x + 4 = \sqrt{54} or x + 4 = -\sqrt{54}

x+4=3\sqrt{6} or x+4=-3\sqrt{6}

x=-4+3\sqrt{6} or x=-4-3\sqrt{6}

Therefore, a = -4, b = 3 and c = 6 (OR)

a = -4, b = -3 and c = 6

6 0
3 years ago
Read 2 more answers
Please explain how you got your answer.
lyudmila [28]

Answer:

1,500 points per minute

Step-by-step explanation:

the first point where lines intersect is at 2,3 meaning at 1 it is 1.5 meaning 1500 points

4 0
2 years ago
Henry cut a piece of yarn that was 11/6 feet long into two pieces lost two different pairs of fractions that could show the leng
pishuonlain [190]
I need help on that to. We have a test tomorrow and I can't figure it out and I need help:(

3 0
3 years ago
8x+2 what is the value of x?
spayn [35]

Answer:

you can't tell

Step-by-step explanation:

we don't know what x is equal to because there is no equivalent. x here can equal anything.

4 0
3 years ago
Read 2 more answers
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